Fix warnings in Release mode

diff --git a/include/deal.II/base/exceptions.h b/include/deal.II/base/exceptions.h
index ec4d1e7a250cc7368e282bba1fc549edf52b9671..2f254faf9020503b8f0eed71618be35b6011c84a 100644 (file)
--- a/include/deal.II/base/exceptions.h
+++ b/include/deal.II/base/exceptions.h
@@ -1596,6 +1596,7 @@ namespace deal_II_exceptions
   AssertDimension(VEC.size(), DIM1);                 \
   for (const auto &subvector : VEC)                  \
     {                                                \
+      (void)subvector;                               \
       AssertDimension(subvector.size(), DIM2);       \
     }